› added 13 years ago

186

TIL a river in Cleveland was so polluted it caught on fire……. 13 times…

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OYl4 TIL 80% of registered cars in Albania are Mercedes
b6PW4 TIL that Xerox and Canon developed a digital watermark which color laser printers produce on every page that identifies the specific printer that was used to print the document in case it is used in a crime.
kDNd TIL about hostile architecture, where public spaces are constructed or altered to discourage people from using them in a way not intended by the owner.
Rpg7 TIL the (then) world’s tallest structure was accidentally destroyed by a maintenance crew in 1991
KOQ8Q TIL: The speed of light isn't there for light, it's there because of causality. If something moved faster causality would break and observers would see effect before cause.